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Why was DDT considered a good and effective insecticide?

Farmers used DDT on a variety of food crops in the United States and worldwide. DDT was also used in buildings for pest control. The reason why DDT was so widely used was because it is effective, relatively inexpensive to manufacture, and lasts a long time in the environment (2).

Why was the use of DDT insecticide not successful in eradicating malaria?

The country resumed DDT spraying, but it was largely ineffective because mosquitoes had acquired resistance to the chemical in the interim, presumably because of its continued use in agriculture. In 1996, the country switched to alternative insecticides and malaria incidence increased dramatically.

How effective is DDT?

Of the dozen insecticides WHO has approved as safe for house spraying, the most effective is DDT.” Evidence from countries that continued using DDT showed that correct and timely use of indoor spraying can reduce malaria transmission by up to 90%.

What are the disadvantages of DDT?

Human health effects from DDT at low environmental doses are unknown. Following exposure to high doses, human symptoms can include vomiting, tremors or shakiness, and seizures. Laboratory animal studies showed effects on the liver and reproduction. DDT is considered a possible human carcinogen.

Is DDT a biodegradable waste?

DDT (Dichlorodiphenyltrichloroethane) is non-biodegradable pesticide i.e. it cannot be degraded by the action of microbes. It is a crystalline, colorless and odorless compound which was used extensively as an insecticide until its harmful environmental impacts were identified. Thus, it is a non-biodegradable compound.

Is DDT an antibiotic?

DDT is A An antibiotic B A biodegradable pollutant class 11 biology CBSE.

Is DDT an antiseptic?

Formalin, DDT and lime are disinfectants whereas iodine is an antiseptic. So, the answer is Iodine.

Is Bakelite non-biodegradable?

(d) Substances that cannot be broken down by biological processes in nature are non-biodegradable, e.g., polythene, detergent, PVC, plastics, Bakelite, DDT etc.

Is lime juice biodegradable?

Answer. Fruit-peels, cake, lime juice, grass and wood are biodegradable substances.

Is Nylon is non biodegradable?

Despite the fact that polyethylene (PE) and Nylon 11 (NY11) can be produced from biomass or renewable resources, they are non-biodegradable. They can be derived from renewable feedstocks, thereby reducing greenhouse gas emissions.